GMC Sierra 2500HD (2017) is 760 mm (29.92 inch) longer, 39 mm (1.54 inch) wider, 203 mm (7.99 inch) higher and has 393 liters (13.88 ft3) bigger cargo space than Honda Pilot (2018).
Honda Pilot (2018) is 765 kg (1,687 lbs) lighter than GMC Sierra 2500HD (2017).